Federal Register / Vol. 72, No. 37 / Monday, February 26, 2007 / Proposed Rules 8307 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

section 106, describes the authority of 

the FAA Administrator. Subtitle VII, 

Aviation Programs, describes in more 

detail the scope of the Agency’s 

authority. 

We are issuing this rulemaking under 

the authority described in subtitle VII, 

part A, subpart III, section 44701, 

‘‘General requirements.’’ Under that 

section, Congress charges the FAA with 

promoting safe flight of civil aircraft in 

air commerce by prescribing regulations 

for practices, methods, and procedures 

the Administrator finds necessary for 

safety in air commerce. This regulation 

is within the scope of that authority 

because it addresses an unsafe condition 

that is likely to exist or develop on 

products identified in this rulemaking 

action. 

Regulatory Findings 

We have determined that this 

proposed AD would not have federalism 

implications under Executive Order 

13132. This proposed AD would not 

have a substantial direct effect on the 

States, on the relationship between the 

National Government and the States, or 

on the distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify that the proposed regulation: 

1. Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866; 

2. Is not a ‘‘significant rule’’ under the 

DOT Regulatory Policies and Procedures 

(44 FR 11034, February 26, 1979); and 

3. Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

We prepared a regulatory evaluation 

of the estimated costs to comply with 

this proposed AD and placed it in the 

AD docket. See the ADDRESSES section 

for a location to examine the regulatory 

evaluation. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Safety. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 14 CFR part 

39 as follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

2. The Federal Aviation 

Administration (FAA) amends § 39.13 

by adding the following new 

airworthiness directive (AD): 

McDonnell Douglas: Docket No. FAA–2007–

27340; Directorate Identifier 2006–NM–

271–AD. 

Comments Due Date 

(a) The FAA must receive comments on 

this AD action by April 12, 2007. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to McDonnell Douglas 

Model DC–10–30 and DC–10–30F (KC–10A 

and KDC–10) airplanes, Model DC–10–40 

and DC–10–40F airplanes, and Model MD–

10–30F airplanes; certificated in any 

category; as identified in Boeing Service 

Bulletin DC10–28–245, dated September 19, 

2006. 

Unsafe Condition 

(d) This AD results from fuel system 

reviews conducted by the manufacturer. We 

are issuing this AD to detect and correct an 

inadequate bond between the internal fuel 

pump housings and the structure (wall) of 

the lower auxiliary fuel tank. This condition, 

if not corrected, could fail to meet fault 

current requirements and result in a potential 

ignition source that, in combination with 

flammable fuel vapors, could cause a fuel 

tank explosion and consequent loss of the 

airplane. 

Compliance 

(e) You are responsible for having the 

actions required by this AD performed within 

the compliance times specified, unless the 

actions have already been done. 

Installation of Brackets and Jumpers, and 

Resistance Measurement 

(f) Within 60 months after the effective 

date of this AD, do the actions described in 

paragraphs (f)(1) and (f)(2) of this AD, in 

accordance with the Accomplishment 

Instructions of Boeing Service Bulletin 

DC10–28–245, dated September 19, 2006. 

(1) Install bracket assemblies and jumper 

wires between the structure of the lower 

auxiliary fuel tank and its internal fuel 

pumps. 

(2) Do an electrical resistance measurement 

between the fuel pump housings and 

structure of the lower auxiliary fuel tank. 

Corrective Action 

(g) If any resistance measurement done in 

accordance with paragraph (f)(2) of this AD 

is greater than 2.5 milliohms on either fuel 

pump housing: Before further flight, rework 

the electrical bonding between the fuel pump 

housings and the structure of the lower 

auxiliary fuel tank as needed to achieve a 

resistance measurement of 2.5 milliohms or 

less on both fuel pump housings, as 

described in Boeing Service Bulletin DC10–

28–245, dated September 19, 2006. 

Alternative Methods of Compliance 

(AMOCs) 

(h)(1) The Manager, Los Angeles Aircraft 

Certification Office (ACO), FAA, has the 

authority to approve AMOCs for this AD, if 

requested in accordance with the procedures 

found in 14 CFR 39.19. 

(2) Before using any AMOC approved in 

accordance with § 39.19 on any airplane to 

which the AMOC applies, notify the 

appropriate principal inspector in the FAA 

Flight Standards Certificate Holding District 

Office. 

Issued in Renton, Washington, on February 

16, 2007. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E7–3171 Filed 2–23–07; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2007–27339; Directorate 

Identifier 2006–NM–280–AD] 

RIN 2120–AA64 

Airworthiness Directives; McDonnell 

Douglas Model DC–10–10 and DC–10–

10F Airplanes, Model DC–10–15 

Airplanes, Model DC–10–30 and DC–

10–30F (KC–10A and KDC–10) 

Airplanes, Model DC–10–40 and DC–

10–40F Airplanes, Model MD–10–10F 

and MD–10–30F Airplanes, and Model 

MD–11 and MD–11F Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to adopt a 

new airworthiness directive (AD) for 

certain transport category airplanes 

identified above. This proposed AD 

would require modifying the fuel boost 

pumps. This proposed AD results from 

a fuel boost pump found with blown 

thermal fuses and a fractured thrust 

washer. We are proposing this AD to 

prevent failure of the fuel boost pumps, 

which could lead to the potential of 

ignition sources inside fuel tanks. This 

condition, in combination with 

flammable fuel vapors, could result in 

fuel tank explosions and consequent 

loss of the airplane. 

DATES: We must receive comments on 

this proposed AD by April 12, 2007. 

ADDRESSES: Use one of the following 

addresses to submit comments on this 

proposed AD. 


hsrobinson on PROD1PC76 with PROPOSALS
8308 Federal Register / Vol. 72, No. 37 / Monday, February 26, 2007 / Proposed Rules 

• DOT Docket Web site: Go to 

http://dms.dot.gov and follow the 

instructions for sending your comments 

electronically. 

• Government-wide rulemaking Web 

site: Go to http://www.regulations.gov 

and follow the instructions for sending 

your comments electronically. 

• Mail: Docket Management Facility, 

U.S. Department of Transportation, 400 

Seventh Street, SW., Nassif Building, 

Room PL–401, Washington, DC 20590. 

• Fax: (202) 493–2251. 

• Hand Delivery: Room PL–401 on 

the plaza level of the Nassif Building, 

400 Seventh Street, SW., Washington, 

DC, between 9 a.m. and 5 p.m., Monday 

through Friday, except Federal holidays. 

Contact Boeing Commercial 

Airplanes, Long Beach Division, 3855 

Lakewood Boulevard, Long Beach, 

California 90846, Attention: Data and 

Service Management, Dept. C1–L5A 

(D800–0024), for the service information 

identified in this proposed AD. 

FOR FURTHER INFORMATION CONTACT: 

Samuel Lee, Aerospace Engineer, 

Propulsion Branch, ANM–140L, FAA, 

Los Angeles Aircraft Certification 

Office, 3960 Paramount Boulevard, 

Lakewood, California 90712–4137; 

telephone (562) 627–5262; fax (562) 

627–5210. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

We invite you to submit any relevant 

written data, views, or arguments 

regarding this proposed AD. Send your 

comments to an address listed in the 

ADDRESSES section. Include the docket 

number ‘‘FAA–2007–27339; Directorate 

Identifier 2006–NM–280–AD’’ at the 

beginning of your comments. We 

specifically invite comments on the 

overall regulatory, economic, 

environmental, and energy aspects of 

the proposed AD. We will consider all 

comments received by the closing date 

and may amend the proposed AD in 

light of those comments. 

We will post all comments we 

receive, without change, to http:// 

dms.dot.gov, including any personal 

information you provide. We will also 

post a report summarizing each 

substantive verbal contact with FAA 

personnel concerning this proposed AD. 

Using the search function of that Web 

site, anyone can find and read the 

comments in any of our dockets, 

including the name of the individual 

who sent the comment (or signed the 

comment on behalf of an association, 

business, labor union, etc.). You may 

review DOT’s complete Privacy Act 

Statement in the Federal Register 

published on April 11, 2000 (65 FR 

19477–78), or you may visit http:// 

dms.dot.gov. 

Examining the Docket 

You may examine the AD docket on 

the Internet at http://dms.dot.gov, or in 

person at the Docket Management 

Facility office between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. The Docket 

Management Facility office (telephone 

(800) 647–5227) is located on the plaza 

level of the Nassif Building at the DOT 

street address stated in the ADDRESSES

section. Comments will be available in 

the AD docket shortly after the Docket 

Management System receives them. 

Discussion 

We have received a report indicating 

that an operator found a fuel boost 

pump with blown thermal fuses and a 

fractured thrust washer. Investigation 

revealed that the fractured Stellite thrust 

washer led to arcing damage to the rotor 

assembly shaft and stator end windings. 

Stellite thrust washers are used in the 

rotor assembly of fuel boost pumps, part 

numbers (P/Ns) 60–847–1A, –2, and –3. 

Failure of the fuel boost pumps, if not 

corrected, could lead to the potential of 

ignition sources inside fuel tanks. This 

condition, in combination with 

flammable fuel vapors, could result in 

fuel tank explosions and consequent 

loss of the airplane. 

Relevant Service Information 

We have reviewed the following 

service bulletins: 

• Boeing Alert Service Bulletin 

DC10–28A254, dated September 8, 

2006, for McDonnell Douglas Model 

DC–10–10 and DC–10–10F airplanes, 

Model DC–10–15 airplanes, Model DC–

10–30 and DC–10–30F (KC–10A and 

KDC–10) airplanes, Model DC–10–40 

and DC–10–40F airplanes, and Model 

MD–10–10F and MD–10–30F airplanes. 

• Boeing Alert Service Bulletin 

MD11–28A134, dated September 8, 

2006, for McDonnell Douglas Model 

MD–11 and MD–11F airplanes. 

Boeing Alert Service Bulletin DC10–

28A254 describes procedures for 

modifying fuel boost pumps, P/Ns 60–

847–1A, –2, and –3. The modification 

involves replacing the pump assembly 

connector, washers, screws, and other 

hardware with new parts, upgrading the 

rotor assembly, inspecting the stator 

assembly wire leads, and rerouting the 

stator-to-connector wire leads. Boeing 

Alert Service Bulletin MD11–28A134 

describes procedures for modifying fuel 

boost pumps, P/Ns 60–847–2 and –3. 

Accomplishing the actions specified in 

the service information is intended to 

adequately address the unsafe 

condition. 

The Boeing service bulletins refer to 

Crane Hydro-Aire Service Bulletin 60–

847–28–3, dated May 1, 2006, as an 

additional source of service information 

for modifying the fuel boost pumps, 

P/Ns 60–847–1A, –2, and –3. (The 

modification converts these parts to 

P/N 60–847–4.) 

Crane Hydro-Aire Service Bulletin 

60–847–28–3 specifies prior 

accomplishment of Crane Hydro-Aire 

Service Bulletin 60–847–1A–28–6, 

dated February 15, 1973, for fuel boost 

pump P/N 60–847–1A. Crane HydroAire Service Bulletin 60–847–28–3 also 

specifies prior accomplishment of Crane 

Hydro-Aire Service Bulletin 60–847–3–

28–13, dated March 17, 1975, for fuel 

boost pump P/N 60–847–2. 

FAA’s Determination and Requirements 

of the Proposed AD 

We have evaluated all pertinent 

information and identified an unsafe 

condition that is likely to exist or 

develop on other airplanes of this same 

type design. For this reason, we are 

proposing this AD, which would require 

accomplishing the actions specified in 

the service information described 

previously. 

Costs of Compliance 

There are about 512 airplanes of the 

affected design in the worldwide fleet. 

This proposed AD would affect about 

360 airplanes of U.S. registry. The 

proposed modification would take about 

3 work hours per fuel boost pump, at an 

average labor rate of $80 per work hour. 

Required parts would cost about $640 

per fuel boost pump. Depending on the 

airplane configuration, there are 

between 10 and 19 fuel boost pumps per 

airplane. Based on these figures, the 

estimated cost of the proposed AD for 

U.S. operators is between $3,168,000 

and $6,019,200, or between $8,800 and 

$16,720 per airplane. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

section 106, describes the authority of 

the FAA Administrator. Subtitle VII, 

Aviation Programs, describes in more 

detail the scope of the Agency’s 

authority. 

We are issuing this rulemaking under 

the authority described in subtitle VII, 

part A, subpart III, section 44701, 

‘‘General requirements.’’ Under that 

section, Congress charges the FAA with 

promoting safe flight of civil aircraft in 

air commerce by prescribing regulations 

for practices, methods, and procedures 


hsrobinson on PROD1PC76 with PROPOSALS
Federal Register / Vol. 72, No. 37 / Monday, February 26, 2007 / Proposed Rules 8309 

the Administrator finds necessary for 

safety in air commerce. This regulation 

is within the scope of that authority 

because it addresses an unsafe condition 

that is likely to exist or develop on 

products identified in this rulemaking 

action. 

Regulatory Findings 

We have determined that this 

proposed AD would not have federalism 

implications under Executive Order 

13132. This proposed AD would not 

have a substantial direct effect on the 

States, on the relationship between the 

National Government and the States, or 

on the distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify that the proposed regulation: 

1. Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866; 

2. Is not a ‘‘significant rule’’ under the 

DOT Regulatory Policies and Procedures 

(44 FR 11034, February 26, 1979); and 

3. Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

We prepared a regulatory evaluation 

of the estimated costs to comply with 

this proposed AD and placed it in the 

AD docket. See the ADDRESSES section 

for a location to examine the regulatory 

evaluation. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Safety. 

The Proposed Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA proposes to amend 14 CFR part 

39 as follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

2. The Federal Aviation 

Administration (FAA) amends § 39.13 

by adding the following new 

airworthiness directive (AD): 

McDonnell Douglas: Docket No. FAA–2007–

27339; Directorate Identifier 2006–NM–

280–AD. 

Comments Due Date 

(a) The FAA must receive comments on 

this AD action by April 12, 2007. 

Affected ADs 

(b) None. 

Applicability 

(c) This AD applies to the airplanes 

identified in paragraphs (c)(1) and (c)(2) of 

this AD, certificated in any category. 

(1) McDonnell Douglas Model DC–10–10 

and DC–10–10F airplanes, Model DC–10–15 

airplanes, Model DC–10–30 and DC–10–30F 

(KC–10A and KDC–10) airplanes, Model DC–

10–40 and DC–10–40F airplanes, and Model 

MD–10–10F and MD–10–30F airplanes; as 

identified in Boeing Alert Service Bulletin 

DC10–28A254, dated September 8, 2006. 

(2) McDonnell Douglas Model MD–11 and 

MD–11F airplanes, as identified in Boeing 

Alert Service Bulletin MD11–28A134, dated 

September 8, 2006. 

Unsafe Condition 

(d) This AD results from a fuel boost pump 

found with blown thermal fuses and a 

fractured thrust washer. We are issuing this 

AD to prevent failure of the fuel boost 

pumps, which could lead to the potential of 

ignition sources inside fuel tanks. This 

condition, in combination with flammable 

fuel vapors, could result in fuel tank 

explosions and consequent loss of the 

airplane. 

Compliance 

(e) You are responsible for having the 

actions required by this AD performed within 

the compliance times specified, unless the 

actions have already been done. 

Service Bulletin Reference Paragraph 

(f) The term ‘‘service bulletin,’’ as used in 

this AD, means the following service 

bulletins, as applicable: 

(1) For the airplanes identified in 

paragraph (c)(1) of this AD, Boeing Alert 

Service Bulletin DC10–28A254, dated 

September 8, 2006. 

(2) For the airplanes identified in 

paragraph (c)(2) of this AD, Boeing Alert 

Service Bulletin MD11–28A134, dated 

September 8, 2006. 

Note 1: Boeing Alert Service Bulletin 

DC10–28A254, dated September 8, 2006; and 

Boeing Alert Service Bulletin MD11–28A134, 

dated September 8, 2006; refer to Crane 

Hydro-Aire Service Bulletin 60–847–28–3, 

dated May 1, 2006, as an additional source 

of service information for accomplishing the 

modification in paragraph (g) of this AD. 

Modification 

(g) At the applicable compliance time 

specified in paragraph (g)(1) or (g)(2) of this 

AD, modify the fuel boost pumps having part 

numbers 60–847–1A, –2, and –3, in 

accordance with the Accomplishment 

Instructions of the applicable service 

bulletin. 

(1) For fuel boost pumps identified as 

Configuration 1 or 2 in Table 1 of paragraph 

1.E. of the applicable service bulletin, do the 

modification within 120 months after the 

effective date of this AD. 

(2) For fuel boost pumps identified as 

Configuration 3 in Table 1 of paragraph 1.E. 

of the applicable service bulletin, do the 

modification within 72 months after the 

effective date of this AD. 

Alternative Methods of Compliance 

(AMOCs) 

(h)(1) The Manager, Los Angeles Aircraft 

Certification Office, FAA, has the authority to 

approve AMOCs for this AD, if requested in 

accordance with the procedures found in 14 

CFR 39.19. 

(2) Before using any AMOC approved in 

accordance with § 39.19 on any airplane to 

which the AMOC applies, notify the 

appropriate principal inspector in the FAA 

Flight Standards Certificate Holding District 

Office. 

Issued in Renton, Washington, on February 

16, 2007. 

Ali Bahrami, 

Manager, Transport Airplane Directorate, 

Aircraft Certification Service. 

[FR Doc. E7–3166 Filed 2–23–07; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2007–27334; Directorate 

Identifier 2006–NM–279–AD] 

RIN 2120–AA64 

Airworthiness Directives; McDonnell 

Douglas Model DC–8–33, –42, and –43 

Airplanes; Model DC–8–50 Series 

Airplanes; Model DC–8F–54 and –55 

Airplanes; Model DC–8–60 Series 

Airplanes; Model DC–8–60F Series 

Airplanes; Model DC–8–72 Airplanes; 

and Model DC–8–70F Series Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), Department of 

Transportation (DOT). 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to adopt a 

new airworthiness directive (AD) for 

certain McDonnell Douglas airplanes 

described previously. This proposed AD 

would require installing bonding 

jumpers to the airplane wing structure 

from the fuel system in-line electrical 

solenoid valves along the left and right 

wing front spar. This proposed AD 

results from fuel system reviews 

conducted by the manufacturer. We are 

proposing this AD to prevent point-ofcontact arcing or filament heating 

damage in the fuel lines that could 

create a potential ignition source, 

which, in combination with flammable 

fuel vapors, could cause a fuel tank 

explosion and consequent loss of the 

airplane. 

DATES: We must receive comments on 

this proposed AD by April 12, 2007. 


hsrobinson on PROD1PC76 with PROPOSALS